Humphrey Bogart
Billy Dannreuther
Jennifer Jones
Gwendolen Chelm
Gina Lollobrigida
Maria Dannreuther
Robert Morley
Peterson
Peter Lorre
Julius O'Hara
Edward Underdown
Harry Chelm
Ivor Barnard
Maj. Jack Ross
Marco Tulli
Ravello
Bernard Lee
Insp. Jack Clayton
Mario Perrone
Purser on SS Nyanga
Giulio Donnini
Administrator
Saro Urzi
Captain of SS Nyanga
Juan de Landa
Hispano-Suiza Driver
Aldo Silvani
Charles
Mimmo Poli
Barman (uncredited)
Peter Sellers
Billy Dannreuther (voice) (uncredited)
Manuel Serrano
Ahmed (uncredited)